These are some possible example "hidden" requirements that the students must manage to get out of you:
- 2 Stories (or at least 2 stories or between 2 and 4 stories)
- 1st floor must have all cards facing out
- 1st floor must only use suite cards
- Entire structure must be built with same suit
- No tape/can use tape
- Folding is OK/is not OK
- Tearing Cards OK/not OK
- Height must be at least two card lengths (on long side)
- Base must be at least 2 cards by 2 cards (long sides or short sides)
- Must be able to withstand a card blowing wind from 24"